In this study, we investigated different sowing dates of varieties that are not yet established in our country or varieties intended for the production of young leafy vegetables. Five varieties or species were used: spinach (Spinacia oleracea 'Harmonica'), white wallrocket (Diplotaxis erucoides 'Wasabi'), tatsoi (Brassica rapa var. rosularis 'Green'), beetroot (Beta vulgaris 'Bull's blood- Scarletta') and chard (Beta vulgaris 'Rhubarb chard'). The seeds were sown in four replicates for each term, on three dates, with an interval of 14 days between each replicate (14. 2. 2024, 28. 2. 2024, 13. 3. 2024). The third replicate is not included in the results due to poor results. At technological maturity, the plants were weighed and the length, total chlorophyll content with SPAD meter and dry matter content of randomly selected leaves were measured. In general, the second sowing date gave higher and better yields than the first sowing date. For weight measurements, the highest average weight was recorded in the second sowing of 'Green' tatsoi (899.62 g) and the lowest average weight in the first repetition of 'Wasabi' white wallrocket (21.01 g). The highest mean values for leaf length measurements were recorded for 'Green' tatsoi at the second sowing (14.6 cm) and the lowest for 'Harmonica' spinach at the first sowing (10.5 cm). When measuring the total chlorophyll content, the highest average values were measured in 'Harmonica' spinach (45.6) at the first sowing date and the lowest in 'Bull's blood - Scarletta' beetroot (30.9) at the first sowing date. The highest average dry matter content was recorded for 'Green' tatsoi at the first sowing date (0.32 g) and the lowest for 'Bull's Blood- Scarletta' beetroot at the second sowing date (0.10 g).
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